Optima took back my red top battery after if finally became too weak to start my Pantera when it was warmed up. If I recall it was 14 years old and they wanted to display it because the case look so good, which makes sense because of its location in a Pantera. The second Optima red top only lasted ten years and neither of those batteries had a battery tender on them all the time when the car wasn't being used. I have been told that the trick to making an Optima battery last a long time is to not let it get completely discharged. I purchased a NAPA brand AGM battery this year and it fits better than the Optima did. It has always been on a Battery Tender and I will see if it lasts as long as the Optimas did.
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